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2/15 Snow threat


SnowGoose69

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This is what happened yesterday when the 850/700 mb low were essentially "stacked" and the raging dry slot pushed into NJ forcing everything back to the NW. Agree with your sentiment that more qpf should be modeled further n and w.

It's important to note the track of the low is quite different than what we saw yesterday. While I agree a "dry slot" may develop as you suggest, it's likely the initial "screwed" eastern zones would see the band eventually swing through as the system travels northeastward and not nearly due north, as with yesterday's system.

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John looking at 500mb guidance and 250/300 jet, they all should be aiming this low much more on a NNE track then is currently being shown. SREF's starting to pick up on this?

 

Possible yeah..I was thinking that the kicker over the Lakes was going to have a much greater impact on this system but the models have really trended more favorably with its positioning. To the point where it now almost is moving west to east behind the amplifying trough -- and has minimal impacts on the western side of the system. 

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question on the NESIS rankings: How is December 2003 not on that list???

 Sorry for extending the OT, but figured I'd chime in as I had some involvement with the RSI project. Check out the RSI map viewer here: http://gis.ncdc.noaa.gov/maps/snowfall.map?view=rsi

 

You'll see that the Dec 4-8, 2003, storm in the Northeast ranks as a category 3. You can also plot up the snowfall map, though I found that it took a while for the map to show up in my browser. 

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Possible yeah..I was thinking that the kicker over the Lakes was going to have a much greater impact on this system but the models have really trended more favorably with its positioning. To the point where it now almost is moving west to east behind the amplifying trough -- and has minimal impacts on the western side of the system. 

 

The placement of that kicker is interesting now, instead of causing the trough to push along to the east and stay neutral/slightly neg, the kicker is almost driving energy into the western side, could cause a faster flow to inject more energy rounding the base of the trough.

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It's important to note the track of the low is quite different than what we saw yesterday. While I agree a "dry slot" may develop as you suggest, it's likely the initial "screwed" eastern zones would see the band eventually swing through as the system travels northeastward and not nearly due north, as with yesterday's system.

 

The track is different, and the motion being more NE/NNE away from the coast towards the BM may help avoid a persistent dry slot though I think looking at the mid levels that there is going to be a transient one somewhere as you mention, this is almost inevitable to me with the current mid level predictions.

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That Feb 2010 map doesn't do justice to the depth of the snow in the Catskills and north to the Heldebergs  of Eastern NY.  There was a very sharp northern/eastern cut-off and the red 30+ area should extend almost as far north as the north edge of blue area. The areas of 30+ they show in the Catskills were actually 48+ in most areas and 60+ in some.

 

 

not really based on this pic 

20100223-20100228-5.46.jpg

 

and quite similar to this:

19610202-19610205-7.06.jpg

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 Sorry for extending the OT, but figured I'd chime in as I had some involvement with the RSI project. Check out the RSI map viewer here: http://gis.ncdc.noaa.gov/maps/snowfall.map?view=rsi

 

You'll see that the Dec 4-8, 2003, storm in the Northeast ranks as a category 3. You can also plot up the snowfall map, though I found that it took a while for the map to show up in my browser. 

Thanks for this info. I greatly appreciate it.

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I'd bet surface temps crash pretty quickly as soon as intensity increases. The most important levels look good for us to avoid something we saw last night. 

Exactly, if you look back a page or two I was discussing the depth of the EWL. It is not very deep and its nested from 925-2m, this can be overcome by rates and dynamic/evaporative cooling MUCH easier then an EWL from 850-700 mb (850-800 was the EWL last night we struggled with)

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Wowzers on the SREF. I'm assuming more members joined the crush Long Island bandwagon. There were some really nice members last run, too.

The spread is def closer to the coast. Let's see how the 0z guidance comes in. The NWS really should issue a winter storm watch for more areas and go with advisories if need be. There's no harm in that.

*maybe just for LI. Regardless, advisories should be up right now for more areas. And I'm def not bashing Upton. I think they did a great job with the last storm.

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